Yes, there are humongous bargains. Just watch the locale. Many lines are canceling Asia cruises, bringing those ships back to cruise closer waters- West Coast, Caribbean, N. Europe. Windstar (very desirable) allows cancellation as late as 15 days before departure. Celebrity refunds airfare (and cruise cost) if booked through their in-house agency then subsequently cancelled.
For those concerned about quarantines, remember that episode was just a couple of ships of the hundreds of cruise chips going about their cruises without any difficulty at all.
We have final payment coming up in a few days for a Summer, Mediterranean cruise. They've already upgraded our basic balcony cabin to full-on suite with all the perks including butler for the same price. We are confidently holding our fingers crossed that it will come off, and that if governments close ports or the CV-19 goes into pandemic mode, insurance will recover the cost. Gutsy, I know, but you only go around once.
Maybe we're braver (or dumber) than most, but we went to N. Africa shortly after 9/11, Thailand just after their currency crisis, Hong Kong during the SARS epidemic. So far, so good, and the people in these troubled places need to make a living and will do whatever is necessary to make visitors happy and healthy.
Jim